follow these steps:
Go to your Gmail inbox and click on contacts,
to the right corner you'll find export button click on it,
then answer this question, Who do you want to export?
by clicking on everyone,
and answer this question Which export format?
bye clicking on Outlook CSV format,
after that click on export, then you'll be prompted to save a file save it.
Now, go to your hotmail inbox and click on contact list,
after that click on manage you'll find it on the top of the contact list,
then, click on import,
Select the service you're importing contacts from as Gmail (using Outlook CSV format).
then brows for the file you've just saved from Gmail and choose it,
Now click on import contacts,
and the contacts will be added to your hotmail contact list,
you can remove duplicated contacts, too by clicking on that option.
Log on to your Hotmail account and click the "Contacts" button located below your email folders.
Locate the contact that you want to delete and click the name to launch the profile. The profile will load in the right pane.
Click the "Delete" button. Click "Yes" when you see the "Are you sure you want to delete the selected contact(s)?" confirmation message. You can also delete multiple contacts by pressing "Ctrl" and clicking each contact that you want to delete. When you finish making your selection, click "Delete" to remove the contacts.